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Adriano edited comment on IMPALA-8852 at 8/12/19 8:31 AM: ---------------------------------------------------------- WORKAROUND -1-: Create the dfs.domain.socket.path manually with the proper hdfs user permission on the local fs as: {code:java} # mkdir /var/run/hdfs-sockets/ # chown hdfs:hadoop /var/run/hdfs-sockets/ # chmod 755 /var/run/hdfs-sockets/ # mkdir /var/run/hdfs-sockets/dn # chown hdfs:hdfs /var/run/hdfs-sockets/dn # chmod 1666 /var/run/hdfs-sockets/dn {code} WORKAROUND -2-: 1) On the Dedicated Coordinators, add the following line into "Impala Daemon Command Line Argument Advanced Configuration Snippet (Safety Valve)": -is_executor=false 2) Add the following property into "Impala Daemon HDFS Advanced Configuration Snippet (Safety Valve)": {code:java} <property> <name>dfs.client.read.shortcircuit</name> <value>false</value> <description>Disable shortcircuit on dedicated coordinator</description> </property> {code} 3) Save the changes and restart the Impala Daemon Coordinator instances. was (Author: adrenas): WORKAROUND: Create the dfs.domain.socket.path manually with the proper hdfs user permission on the local fs as: {code:java} # mkdir /var/run/hdfs-sockets/ # chown hdfs:hadoop /var/run/hdfs-sockets/ # chmod 755 /var/run/hdfs-sockets/ # mkdir /var/run/hdfs-sockets/dn # chown hdfs:hdfs /var/run/hdfs-sockets/dn # chmod 1666 /var/run/hdfs-sockets/dn {code} > The dfs.domain.socket.path can be nonexistent on coordinator only nodes > ----------------------------------------------------------------------- > > Key: IMPALA-8852 > URL: https://issues.apache.org/jira/browse/IMPALA-8852 > Project: IMPALA > Issue Type: Bug > Components: Backend > Affects Versions: Impala 3.2.0 > Reporter: Adriano > Priority: Minor > > On coordinator only nodes ([typically the edge > nodes|https://www.cloudera.com/documentation/enterprise/5-15-x/topics/impala_dedicated_coordinator.html#concept_omm_gf1_n2b]): > {code:java} > --is_coordinator=true > --is_executor=false > {code} > the *dfs.domain.socket.path* (can be nonexistent on the local FS as the > Datanode role eventually is not installed on the edge node). > The non existing path prevent the ImpalaD to start with the message: > {code:java} > I0809 04:15:53.899714 25364 status.cc:124] Invalid short-circuit reads > configuration: > - Impala cannot read or execute the parent directory of > dfs.domain.socket.path > @ 0xb35f19 > @ 0x100e2fe > @ 0x103f274 > @ 0x102836f > @ 0xa9f573 > @ 0x7f97807e93d4 > @ 0xafb3b8 > E0809 04:15:53.899749 25364 impala-server.cc:278] Invalid short-circuit reads > configuration: > - Impala cannot read or execute the parent directory of > dfs.domain.socket.path > {code} > despite a coordinator-only ImpalaD does not do short circuit reads. -- This message was sent by Atlassian JIRA (v7.6.14#76016) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org For additional commands, e-mail: issues-all-h...@impala.apache.org